Fungalpedia – Note 35 Neoalbatrellus
Neoalbatrellus Audet
Citation if using this entry: Fallahi et al. (2023) New genera in 2010-2011. Mycosphere (in prep)
Index Fungorum, , MycoBank, GenBank, Figs 1, 2.
Serge Audet (2010) resolved the polyphyletic nature of the genus Scutiger Paulet and thereupon introduced Neoalbatrellus among the other six new genera based on the morphological and trophic characters, chemotaxis and phylogenetic (nrITS and 28S) analysis. Neoalbatrellus was typified by N. caeruleoporus (Peck) Audet. The members of this genus are considered saprophytic and possibly ectomycorrhizal. Five species have been classified in Neoalbatrellus: Neoalbatrellus caeruleoporus, Neoalbatrellus odorus, Neoalbatrellus subcaeruleoporus, Neoalbatrellus yasudae, and Neoalbatrellus yasudai. The presence of extracellular laccase was reported in the basidiomata of Neoalbatrellus caeruleoporus causing white rot (Marr et al. 1986, Audet 2010). Based on molecular (ITS and 28S rDNA) data and the presence of the dimeric meroterpenoid pigment (grifolinone B), Albatrellopsis has been recognized as the closest genus to Neoalbatrellus (Zhou & Liu, 2010; Chen et al. 2017). Neoalbatrellus can be distinguished from Albatrellopsis by its unique hymeniderm and the colors of its basidiomata, which are blue, black, and brown. The basidiomata of this genus are of greyish blue to black colored with tones of blue and a central to off-central stipe (Audet 2010). The hymenophore is bluish poroid (Audet 2010). The dried specimens turn completely orange due to the presence of necropigments (Audet 2010). The macrochemical reaction tests with Potassium hydroxide on the cap turn it to orange to dark red to reddish brown colours (Audet 2010). The other characteristics of the genus are a monomitic hyphal system with broad, smooth, rarely curled hyphae having inamyloid, and non-dextrinoid walls (Audet 2010. Basidiospores are generally white-coloured, broadly ellipsoid to subglobose shaped, thick-walled, hyaline, inamyloid, cyanophilic, non-dextrinoid, and with a broad oily drop (Audet 2010).
Type species: Neoalbatrellus caeruleoporus (Peck) Audet
Other accepted species:
Neoalbatrellus odorus Yuan Y. Chen & B.K. Cui
Neoalbatrellus subcaeruleoporus Audet & B.S. Luther
Neoalbatrellus yasudae (Lloyd) Audet
Fig 1– a,b Basidiomata of Neoalbatrellus odorus (redrawn from Chen et al. 2017). Scale bars: a= 2 cm; b= 1cm.
Fig 2– Microscopic structures of Neoalbatrellus odorus (Redrawn from Chen et al. 2017). a Basidia. b Basidiospores c Hyphae from trama. d Hyphae from stipe. e Hyphae from context. Scale bars: a, c, d = 10 μm, b=5 μm.
References
Audet S. 2010- Essai de découpage systématique du genre Scutiger (Basidiomycota): Albatrellopsis, Albatrellus, Polyporoletus, Scutiger et description de six nouveaux genres. Mycotaxon 111, 431-464. https://www.mykoweb.com/CAF/PDF/Essai%20de%20d%C3%A9coupage%20syst%C3%A9matique%20du%20genre%20Scutiger.pdf
Chen YY, Wang M, Zhang B, Cui BK. 2017- Neoalbatrellus odorus sp. nov. (Albatrellaceae, Russulales) from Southwest China. Phytotaxa 309, 217-228. https://doi.org/10.11646/phytotaxa.309.3.2
Marr CD, Grund DW, Harrison KA. 1986- The taxonomic potential of laccase and tyrosinase spot tests. Mycologia 78: 169–184. http://dx.doi.org/10.2307/3793162
Zhou ZY, Liu JK. 2010- Pigments of fungi (macromycetes). Natural Product Reports 27: 1531–1570. http://dx.doi.org/10.1039/c004593d
Entry by:
Maryam Fallahi, Center of Excellence in Fungal Research, Mae Fah Luang
University, Chiang Rai 57100, Thailand.
(Edited by Kevin D Hyde)